Information about my Surname

I am Spanish and I would like to know some information about the origin of my last surname 'Palén'. It is a rare Family name here in Spain (in fact, we never found anyone with this name, unless our direct family. Almost all my grandfather's family died(on my mother's side), so, we only know about very few relatives in Argentina that have the name. I have known on the web that there are people with the same surname (including the accent) in Scandinavian Countries. Thank you very much for your help.